<template>
  <div>
    <router-link to="/">返回主页</router-link>
    <el-button @click="$router.push('/')">回主页</el-button>
    <!-- $router.back() 后退 -->
    <el-button @click="$router.back()">后退</el-button>
    <img src="./404.png" alt="">
  </div>
</template>
